Why teachers shouldn't carry guns

I need a thesis statement

Use this format:

Teachers should/shouldn’t carry guns because, (reason 1), (reason 2), and (reason 3)

You can fill it out with how many ever reason you’re using in your paper. But the thesis should cover the whole paper. For example:

John Locke would not approve of the actions in lord of the Flies because the natural rights of liberty, property, and health was violated.